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Thread: CAL FIRE Guideline outside California

  1. #11
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    Quote Originally Posted by Sierrasparky View Post
    So it is. I missed that.
    I don't get what was changed to 210.**
    210?

    The relevant changes are in 605.11.1.2. The italicized parts are revised, I believe.

  2. #12
    Join Date
    Feb 2007
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    Quote Originally Posted by jaggedben View Post
    210?

    The relevant changes are in 605.11.1.2. The italicized parts are revised, I believe.
    Maybe. I downloaded the update and there is more than 605.
    They included a whole 210.xx branch circuit requirement. I for the life of me cannot figure out the change....

  3. #13
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    Location
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    The new text in the CRC is below. I assume the provisions in the other codes are equivalent.

    Cheers, Wayne

    Quote Originally Posted by California Residential Code July 1, 2018 Supplement
    R324.6 Roof access and pathways. Roof access, pathways,
    and setback requirements shall be provided in accordance
    with Sections R324.6.1 through R324.6.2.1. Access and minimum
    spacing shall be required to provide emergency access
    to the roof, to provide pathways to specific areas of the roof,
    to provide for smoke ventilation opportunity areas, and to
    provide emergency egress from the roof.
    Exceptions:
    1. Detached, nonhabitable structures, including but not
    limited to detached garages, parking shade structures,
    carports, solar trelisses, and similar structures,
    shall not be required to provide roof access.
    2. Roof access, pathways, and setbacks need not be
    provided where the fire code official has determined
    that rooftop operations will not be employed.
    3. These requirements shall not apply to roofs with
    slopes of 2 units vertical in 12 units horizontal (2: 12)
    or less.
    R324.6.1 Pathways. Not less than two minimum 36-inchwide
    (914 mm) pathways on separate roof planes, from
    lowest roof edge to ridge, shall be provided on all buildings.
    At least one pathway shall be provided on the street
    or driveway side of the roof. For each roof plane with a
    photovoltaic array, a minimum 36-inch-wide (914 mm)
    pathway from the lowest roof edge to ridge shall be provided
    on the same roof plane as the photovoltaic array, on
    an adjacent roof plane, or straddling the same and adjacent
    roof planes. Pathways shall be over areas capable of
    supporting fire fighters accessing the roof. Pathways shall
    be located in areas with minimal obstructions such as vent
    pipes, conduit, or mechanical equipment.
    R324.6.2 Setback at ridge. For photovoltaic arrays occupying
    not more than 33 percent of the plan view total roof
    area, not less than an 18-inch (457 mm) clear set back is
    required on both sides of a horizontal ridge. For photovoltaic
    arrays occupying more than 33 percent of the plan view
    total roof area, not less than a 36-inch (914 mm) clear set
    back is required on both sides of a horizontal ridge.
    R324.6.2.1 Alternative setback at ridge. Where an automatic
    sprinkler system is installed within the dwelling in
    accordance with NFPA 13D setbacks at ridges shall
    conform with one of the following:
    1. For photovoltaic arrays occupying not more than
    66 percent of the plan view total roof area, not
    less than an 18-inch (457 mm) clear setback is
    required on both sides of a horizontal ridge.
    2. For photovoltaic arrays occupying more than 66
    percent of the plan view total roof area, not less
    than a 36-inch (914 mm) clear setback is
    required on both sides of a horizontal ridge.
    R324.6.4 Emergency escape and rescue opening. Panels
    and modules installed on dwellings shall not be placed on
    the portion of a roof that is below an emergency escape and
    rescue opening. A 36-inch-wide (914 mm) pathway shall be
    provided to the emergency escape and rescue opening.

  4. #14
    Join Date
    Nov 2015
    Location
    CA, USA
    Posts
    649
    Quote Originally Posted by Carultch View Post
    Do any other states have statewide standards for how to lay out setbacks and access paths on rooftop solar arrays? If so, where could one find them? Is there any imminent possibility of the California rules becoming a national standard?


    Typically states adopt a modified version of either the IFC or NFPA 1 and they both have PV requirements in them including array layout restrictions. No one is directly referencing the CAL FIRE Guidelines anymore that I know of now that they have been incorporated into the fire codes. California uses a modified version of the IFC.
    There are no national building code standards, it's all at the state level.

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